EP2318114B1 - Filter - Google Patents
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- Publication number
- EP2318114B1 EP2318114B1 EP09791497A EP09791497A EP2318114B1 EP 2318114 B1 EP2318114 B1 EP 2318114B1 EP 09791497 A EP09791497 A EP 09791497A EP 09791497 A EP09791497 A EP 09791497A EP 2318114 B1 EP2318114 B1 EP 2318114B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- seal
- sheet
- cylindrical body
- substantially cylindrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/528—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/025—Making of sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/027—Radial sealings
Definitions
- the invention relates to filters.
- Filters include, in part, filter media which removes impurities from a fluid, such as, for example, oil or fuel that passes through filter media.
- either the filter or the filter media associated therewith must be periodically replaced to reduce the potential of developing unacceptably high impedance in the fluid path flow restriction.
- German publication No. DE4421024 discloses a component unit which holds at least one hollow and longitudinal filter element for dust carried in hot gas streams, and has a holder with a support sleeve. The end towards the carrier base gives a sealed seating with movement play at the passage. A flexible sealing plate covers the play, at least, bonded to the sealing seat end of the sleeve and the carrier base.
- Canadian patent No. CA997684 discloses plastics frame filter elements in which the filter material is supported in a tensioned condition by the frame and penetrates through at least one side of the frame to such a distance that the projecting filter material can serve as a seal, and the frame itself air tightly penetrates through the filter medium.
- US patent No. US4886533 discloses a gas filter that has a simple structure and maintain the sealing effect of sealing members even at a high temperature.
- the gas filter comprises a case with a gas inlet and a gas outlet, a ceramic filter placed in the case, sealing members for sealing gaps between the case and the filter and also for directing gas entering from the gas inlet so as not to bypass the filter before exiting, and an elastic member placed in the case for pressing the sealing members to ensure unfailing sealing.
- WIPO publication No. WO20067049694 discloses a filter assembly including a tubular filter housing and a removable filter element for use therein that employ a compressible seal element.
- the seal element connected to the rest of the filter element and located to sealingly engage the filter housing.
- US publication No. US2003/182911 discloses an improved filter element which in a preferred form includes first and second end caps, with media extending therebetween.
- the end caps are preferably formed from foamed polyurethane, and preferably there are no outer peripheral standoff indents provided in the end caps.
- European publication No. EP1134015 discloses a filter element including pleated filter r media having a plurality of pleats in a closed annular loop having an outer perimeter defined by a plurality of outer pleat tips, an inner perimeter defined by a plurality of inner pleat tips, the loop having a hollow interior extending along an axis, wherein fluid to be filtered flows laterally through the filter media and flows axially in the hollow interior.
- Figure 1 is a perspective view of a filter in accordance with an exemplary embodiment of the invention.
- Figure 2 is a cross-sectional view of the filter of Figure 1 according to line 2-2;
- Figure 3 is an enlarged view of the filter according to line 3 of Figure 2 ;
- Figure 4 is a perspective view of a sheet of filter media being prepared, into a substantially cylindrical body accordance with an exemplary embodiment of the invention
- Figures 5A-5C illustrate perspective views of a sheet of filter media that may be formed into a substantially cylindrical body in accordance with an exemplary embodiment of the invention
- Figure 6 is a top view of a pre-formed sheet of filter media in accordance with an exemplary embodiment of the invention.
- Figure 7 is a perspective view of a substantially cylindrical body of filter media in accordance with an exemplary embodiment of the invention.
- Figure 8 is a perspective view of the substantially cylindrical body of filter media of Figure 7 that is modified in a precision cutting operation
- FIGS. 9A-9C are perspective views of a filter being manufactured in accordance with an exemplary embodiment of the invention.
- Figure 10 is an enlarged view of a filter in accordance with an exemplary embodiment of the invention.
- Figure 11 is an enlarged view of a filter in accordance with an exemplary embodiment of the invention.
- Figure 12 is a cross-sectional view of a filter in accordance with an exemplary embodiment of the invention.
- Figure 13 is a cross-sectional view of a filter in accordance with an exemplary embodiment of the invention.
- Figure 14 is a perspective view of a filter in accordance with an exemplary embodiment of the invention.
- Figure 15 is a cross-sectional view of the filter of Figure 15 according to line 15-15;
- Figure 16 is an enlarged view of the filter according to line 16 of Figure 15 ;
- Figure 17 is a method for manufacturing a filter in accordance with an exemplary embodiment of the invention.
- a filter 10 is shown according to an exemplary embodiment of the invention.
- the filter 10 generally comprises a cylindrical shape. It will be appreciated, however, that the filter 10 is not limited to include any particular shape or design and that the filter 10 may include any desirable shape or design.
- the filter 10 is generally defined to include filter media, which is shown generally at 12.
- the filter media 12 includes a sheet 14 of filter material that is rolled or wrapped to generally define a substantially cylindrical body 16.
- the substantially cylindrical body 16 generally defines an axial passage 18.
- the sheet 14 is rolled or wrapped about a central axis, A-A, that is shown extending through the axial passage 18.
- the substantially cylindrical body 16 defines an upper portion 20 and a lower portion 22.
- the substantially cylindrical body 16 is defined by a height, H, and a diameter, D.
- the sheet 14 of filter media 12 may be defined by any desirable number of layers, patterns, configurations or the like.
- the sheet 14 of filter media 12 may include one or more layers or the like defined by, for example, corrugations 24, embossments 26, a substantially flat, planar surface 28, or the like.
- the sheet 14 of filter media 12 may also include one or more end beads 30.
- the filter media 12 further defines a first axial end surface 32 proximate the upper portion 20 and a second axial end surface 34 proximate the lower portion 22.
- the first axial end surface 32 is arranged opposite the second axial end surface 34.
- the filter media 12 further defines an outer circumferential side surface 36 and an inner circumferential side surface 38.
- the inner circumferential side surface 38 defines the axial passage 18.
- the filter 10 includes a first core plug 40 disposed adjacent the first axial end surface 32 and extending axially into the axial passage 18.
- the filter 10 includes a second core plug 42 disposed adjacent the second axial end surface 34 and extending axially into the axial passage 18.
- the first and second core plugs 40, 42 may include any desirable plastic material, such as, for example, Nylon
- the filter 10 includes a ring 44.
- the ring 44 includes a radial portion 46 and an axial portion 48.
- the radial portion 46 is disposed substantially adjacent the second axial end surface 34
- the axial portion 48 is disposed substantially adjacent the outer circumferential side surface 36.
- the ring 44 may include any desirable material such as, for example, metallic or plastic.
- fluid may flow through the filter 10 according to the direction of the arrow, F.
- the second axial end surface 34 may generally define an upstream, "dirty side” of the filter 10 that receives unfiltered, "dirty” fluid whereas the first axial end surface 32 may generally define a downstream, "clean side” of the filter 10 that provides filtered, "clean” fluid.
- the filter 10 is not limited to the above-described fluid flow according to the direction of the arrow, F, and, if desired, the first axial end surface 32 may define the upstream, "dirty side” of the filter 10, and, the second axial end surface 34 may define the downstream, "clean side” of the filter 10.
- a seal 50 may be disposed at least proximate the upper portion 20 of the substantially cylindrical body 16.
- the seal 50 is located substantially adjacent the filter housing and proximate a passage (not shown) formed in the filter housing.
- the seal 50 prevents potentially unfiltered, "dirty fluid” from escaping the filter housing through the filter housing passage. Accordingly, the seal 50 prevents the mixing of "dirty fluid” with the "clean fluid” such that the filtered, "clean fluid” may leave the filter housing through the filter housing passage by way of the fluid moving through the filter 10 according to the direction of the arrow, F.
- the seal 50 is disposed upon a stepped ledge 52 of the substantially cylindrical body 16.
- the stepped ledge 52 is formed proximate the upper portion 20 of the substantially cylindrical body 16.
- the ledge 52 is described as a "stepped" ledge, it will be appreciated that the ledge 52 is not limited to define a “step” or any particular shape or dimension. Functionally, the ledge 52 provides a location on the substantially cylindrical body 16 for receiving the seal 50. Accordingly, for example, the ledge 52 may include any desirable size or shape that may permit reception of the seal 50 such as, for example, an arcuate shape, a concave shape, a convex shape, a frustoconical shape, a constant slope, an irregular slope, or the like.
- the stepped ledge 52 generally defines the substantially cylindrical body 16 to have a reduction of its height, H, and a reduction of its diameter, D, which is shown generally at H R and D R , respectively, in Figure 2 .
- the stepped ledge 52 further defines the substantially cylindrical body 16 to include a third axial end surface 54 and a second outer circumferential side surface 56. The third axial end surface 54 and the second outer circumferential side surface 56 are both proximate the upper portion 20 of the substantially cylindrical body 16.
- the third axial end surface 54 is arranged between the first and second axial end surfaces 32, 34. Further, the second circumferential side surface 56 extends between the first and third axial end surfaces 32, 54.
- the stepped ledge 52 may be formed or provided in any desirable fashion.
- a sheet of filter material 14 R may be pre-formed in any desirable configuration prior to being rolled or wrapped upon itself to define the substantially cylindrical body 16.
- the pre-formed sheet 14 R may be defined to have a length, L, including a first length portion, L 1 , and a second length portion, L 2 .
- the first length portion, L 1 defines the height, H
- the second length portion, L 2 defines the reduced height, H R .
- the sheet of filter material 14 R is wrapped upon itself from right to left to define the substantially cylindrical body 16. Accordingly, when wrapped upon itself, the first length portion, L 1 , generally defines the reduced diameter, D R , having the height, H, and, the second length portion, L 2 , generally defines the diameter, D, having the reduced height, H R .
- the stepped ledge 52 may be formed without providing a pre-formed sheet 14 R as described above.
- the sheet 14 may include a length having similar height, H, and, upon rolling or wrapping the sheet 14 about the axis, A-A, upon itself to define the substantially cylindrical body 16, the substantially cylindrical body 16 defines the diameter, D.
- a precision cutting operation for example, may be performed on the substantially cylindrical body 16 in order to remove a portion 16 R of the substantially cylindrical body 16.
- the removed portion 16 R generally defines a ring of the substantially cylindrical body 16 that is removed proximate, for example, the upper portion 20 of the substantially cylindrical body 16.
- the stepped ledge 52 is formed to permit later depositing of the seal 50 upon the ledge 52.
- a knife, K, laser, Z, or the like may be utilized to remove the ring 16 R from the substantially cylindrical body 16.
- the precision cutting operation may be conducted in an operation that involves the simultaneous wrapping of the sheet 14 upon itself while a portion of the sheet 14 is removed.
- the formation of the substantially cylindrical body 16 may be initiated by obtaining an end of the sheet 14 and wrapping the sheet 14 about the axis, A-A, upon itself.
- a sensor and/or processor may be included to provide the stepped ledge 52 in an automated process.
- a sensor may monitor the wrapping of the sheet 14 upon itself, and, upon wrapping the sheet 14 to define the reduced diameter, D R , the sensor may communicate with the processor such that the processor may actuate the knife, K, or laser, Z.
- D R reduced diameter
- a sensor and processor are described above, it will be appreciated that the process is not limited to include a sensor and/or processor and that any desirable type and number of components may be included to communicate in any desirable manner to provide the substantially cylindrical body 16 with the stepped ledge 52.
- the third axial end surface 54 of the stepped ledge 52 is generally defined by the outer three-to-five wraps of the sheet 14, 14 R about the axis, A-A.
- the illustrated embodiment of Figure 3 shows the third axial end surface 54 being defined by three-to-five wraps of the sheet 14, 14 R, it will be appreciated that the third axial end surface 54 may be defined by any desirable number of wraps of the sheet 14, 14 R .
- the seal 50 may be deposited on the stepped ledge 52 in any desirable manner.
- substantially cylindrical body 16 may be disposed in a mold tool and the seal 50 may be molded over the stepped ledge 52 in an injection molding operation.
- the material defining the seal 50 may be permitted to flow between the three-to-five wraps of the sheet 14, 14 R in order to define fingers 58 extending from the seal 50 that extend substantially axially into the substantially cylindrical body 16 to create a mechanical bond of the seal 50 with the substantially cylindrical body 16.
- the seal 50 upon molding the seal 50 over the stepped ledge 52, the seal becomes integral with and adheres to the substantially cylindrical body 16. In an embodiment, the seal may not be integral with the substantially cylindrical body or adhered thereto. By molding the seal 50 in the manner described above, the seal 50 may be provided with the substantially cylindrical body 16 without providing additional components / structure to clip, fasten or retain the seal 50 to the substantially cylindrical body 16. In an embodiment, the seal 50 may include a polyurethane material.
- a retaining ring 60 may be disposed adjacent the stepped ledge 52 such that, upon molding the seal 50 over the stepped ledge 52, the retaining ring 60 becomes encapsulated between the substantially cylindrical body 16 and the seal 50. Functionally, the retaining ring 60 increases the rigidity to the upper portion 20 of the substantially cylindrical body 16.
- the rigidifying ring 60 includes an upper surface 62, a lower surface 64, an inner surface 66 and an outer surface 68.
- the rigidifying ring 60 may include one or more passages 70.
- the one or more passages 70 extend through the rigidifying ring 60, from the inner surface 66 to the outer surface 68.
- the one or more passages 70 extend through the rigidifying ring 60, from the upper surface 62 to the lower surface 64.
- the one or more passages 70 permits the material of the seal 50 to flow therethrough in order to increase the mechanical bond of the rigidifying ring 60 and the seal 50.
- the inner surface 66 is disposed adjacent the second outer circumferential side surface 56 and the lower surface 64 is disposed adjacent the third axial end surface 54. As seen in Figure 10 , the inner surface 66 includes a greater dimension than that of the lower surface 64; conversely, as seen in Figure 11 , the lower surface 64 includes a greater dimension than that of the inner surface 66.
- the rigidifying ring 60 may include any desirable material, such as, for example plastic or metallic.
- a shell 72 may be disposed adjacent the substantially cylindrical body 16 prior to molding the seal 50 over the stepped ledge 52.
- the shell 72 includes an axial portion 74 disposed substantially adjacent the outer circumferential side surface 36, a first radial portion 75 extending radially inwardly toward the central axis, A-A, and disposed substantially adjacent the third axial end surface 54, and a second radial portion 76 extending radially inwardly toward the central axis, A-A, and disposed substantially adjacent the second axial end surface 34.
- the seal 50 is disposed over the stepped ledge 52, and, as a result, encapsulates the first radial portion 75 between the seal 50 and the substantially cylindrical body 16.
- the shell 72 may include any desirable plastic material, such as, for example nylon.
- a shell 78 may be disposed adjacent the substantially cylindrical body 16 prior to molding the seal 50 over the stepped ledge 52.
- the shell 78 includes a first axial portion 80 disposed substantially adjacent the outer circumferential side surface 36, a radial portion 82 extending radially outwardly away from the central axis, A-A, and a second axial portion 84 extending axially away from the radial portion 82.
- the first axial portion 80 of the shell 78 may be adhered, for example, proximate the lower portion 22 of the substantially cylindrical body 16 with, for example, an adhesive.
- the shell 78 is not encapsulated by the seal 50 as described in the embodiments discussed above.
- the seal 50 as associated with the shell 78, however, is formed on the stepped ledge 52 in a substantially cantilevered manner such that the seal 50 extends radially outwardly away from the central axis, A-A, and past the outer circumferential side surface 36 of the substantially cylindrical body 16.
- the radial portion 82 and the second axial portion 84 function by substantially retaining and/or supporting a portion 86 of the seal 50 that extends radially outwardly and past the outer circumferential side surface 36.
- the shell 78 may include any desirable plastic material, such as, for example nylon.
- the seal 50 generally includes a radial base portion 88 disposed substantially adjacent the third axial end surface 54.
- the seal 50 generally includes a first axial portion 90 disposed substantially adjacent the second outer circumferential side surface 56.
- the seal 50 generally includes a second axial portion 92.
- the first and second axial portions 90, 92 extend axially away from the radial base portion 88.
- the first and second axial portions 90, 92 generally define a recess 94 that terminates at a valley 96 defined by the radial base portion 88.
- the recess 94 is created in a method 200 by providing, S.201, the filter media 12 into a mold tool cavity, which includes a protrusion extending from a surface of the mold cavity that corresponds to the shape/contour of the recess 94.
- the protrusion extending from the surface of the mold cavity acts as a dam, S.203, during a molding procedure that results in material (e.g., polyurethane) provided/injected, S.202, into the mold tool cavity to be directed between the wraps of the sheet 14 in order to form the seal 50 with the fingers 58, S.204.
- material e.g., polyurethane
- the resulting recess 94 formed by the protrusion of the mold tool may permit insertion and receipt of a substantially circumferential lip (not shown) of the filter housing within the seal 50.
- the lip may define the passage formed in the filter housing that receives the filtered, "clean fluid.”
- the recess 94 may be filled with any desirable material, such as, for example, a caulking material, to increase the strength of the seal 50.
- the first and second axial portions 90, 92 also include peaks 98 that are to be located adjacent the filter housing and proximate the filter housing passage.
- a filter 100 is shown according to an exemplary embodiment of the invention.
- the filter 100 generally comprises an oval shape. It will be appreciated, however, that the filter 100 is not limited to include any particular shape or design and that the filter 100 may include any desirable shape or design.
- the filter 100 is generally defined to include filter media, which is shown generally at 102.
- filter media 102 is substantially similar to the filter media 12 as shown and described above in Figure 4 with the exception that the filter media 102 includes a sheet 104 that is wrapped to define a substantially oval body 106 rather than a substantially cylindrical body.
- the substantially oval body 106 generally defines an axial passage 108.
- the sheet 104 may be wrapped upon itself to form a substantially oval body 106 that does not form the passage 108.
- the passage 108 may be sealed with any desirable material, such as, for example, a hot melt glue and a core plug may be omitted.
- the passage 108 may be sealed as described above and core plugs may additionally be included.
- the substantially oval body 106 defines an upper portion 110 and a lower portion 112.
- the filter 100 includes a first core plug 114 disposed adjacent a first axial end surface 116 and extending axially into the axial passage 108.
- the filter 100 includes a second core plug 118 disposed adjacent a second axial end surface 120 and extending axially into the axial passage 108.
- the first and second core plugs 114, 118 may include any desirable plastic material, such as, for example, nylon.
- the substantially oval body 106 includes a stepped ledge 122 that is formed proximate the upper portion 110 in a manner similarly described above in Figures 6-9C .
- a seal 124 is deposited upon the stepped ledge 122 in a manner similarly described above, such as, for example, a molding operation. As similarly described above, the material of the seal 124 may flow between the three-to-five outer wraps of the substantially oval body 106 to define fingers 126.
- the seal 124 is disposed upon the stepped ledge 122 in a cantilevered manner as similarly shown and described in Figure 13 .
- the filter 100 includes a shell 128 as similarly described above in Figure 13 having a first axial portion 130, a radial portion 132 extending from the axial portion 130 and a second axial portion 134 extending axially away from the radial portion 132.
- One or more of the radial portion 132 and the second axial portion 134 function by substantially retaining and/or supporting a portion 136 of the seal 124 that extends radially outwardly and past the outer circumferential side surface 138.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
Description
- The invention relates to filters.
- Various filters are known in the art for filtering fluid as it passes through a fluid path. Filters include, in part, filter media which removes impurities from a fluid, such as, for example, oil or fuel that passes through filter media.
- In most applications, either the filter or the filter media associated therewith must be periodically replaced to reduce the potential of developing unacceptably high impedance in the fluid path flow restriction.
- While known filters have proven to be acceptable for various applications, such conventional filters are nevertheless susceptible to improvements that may enhance their overal) performance and cost. Therefore, a need exists to develop improved filters that advance the art.
- German publication No.
DE4421024 discloses a component unit which holds at least one hollow and longitudinal filter element for dust carried in hot gas streams, and has a holder with a support sleeve. The end towards the carrier base gives a sealed seating with movement play at the passage. A flexible sealing plate covers the play, at least, bonded to the sealing seat end of the sleeve and the carrier base. - Canadian patent No.
CA997684 discloses plastics frame filter elements in which the filter material is supported in a tensioned condition by the frame and penetrates through at least one side of the frame to such a distance that the projecting filter material can serve as a seal, and the frame itself air tightly penetrates through the filter medium. - US patent No.
US4886533 discloses a gas filter that has a simple structure and maintain the sealing effect of sealing members even at a high temperature. The gas filter comprises a case with a gas inlet and a gas outlet, a ceramic filter placed in the case, sealing members for sealing gaps between the case and the filter and also for directing gas entering from the gas inlet so as not to bypass the filter before exiting, and an elastic member placed in the case for pressing the sealing members to ensure unfailing sealing. - WIPO publication No.
WO20067049694 - US publication No.
US2003/182911 discloses an improved filter element which in a preferred form includes first and second end caps, with media extending therebetween. The end caps are preferably formed from foamed polyurethane, and preferably there are no outer peripheral standoff indents provided in the end caps. - European publication No.
EP1134015 discloses a filter element including pleated filter r media having a plurality of pleats in a closed annular loop having an outer perimeter defined by a plurality of outer pleat tips, an inner perimeter defined by a plurality of inner pleat tips, the loop having a hollow interior extending along an axis, wherein fluid to be filtered flows laterally through the filter media and flows axially in the hollow interior. - The present disclosure will now be described, by way of example, with reference to the accompanying drawings, in which:
-
Figure 1 is a perspective view of a filter in accordance with an exemplary embodiment of the invention; -
Figure 2 is a cross-sectional view of the filter ofFigure 1 according to line 2-2; -
Figure 3 is an enlarged view of the filter according to line 3 ofFigure 2 ; -
Figure 4 is a perspective view of a sheet of filter media being prepared, into a substantially cylindrical body accordance with an exemplary embodiment of the invention; -
Figures 5A-5C illustrate perspective views of a sheet of filter media that may be formed into a substantially cylindrical body in accordance with an exemplary embodiment of the invention; -
Figure 6 is a top view of a pre-formed sheet of filter media in accordance with an exemplary embodiment of the invention; -
Figure 7 is a perspective view of a substantially cylindrical body of filter media in accordance with an exemplary embodiment of the invention; -
Figure 8 is a perspective view of the substantially cylindrical body of filter media ofFigure 7 that is modified in a precision cutting operation; -
Figures 9A-9C are perspective views of a filter being manufactured in accordance with an exemplary embodiment of the invention; -
Figure 10 is an enlarged view of a filter in accordance with an exemplary embodiment of the invention; -
Figure 11 is an enlarged view of a filter in accordance with an exemplary embodiment of the invention; -
Figure 12 is a cross-sectional view of a filter in accordance with an exemplary embodiment of the invention; -
Figure 13 is a cross-sectional view of a filter in accordance with an exemplary embodiment of the invention; -
Figure 14 is a perspective view of a filter in accordance with an exemplary embodiment of the invention; -
Figure 15 is a cross-sectional view of the filter ofFigure 15 according to line 15-15; -
Figure 16 is an enlarged view of the filter according toline 16 ofFigure 15 ; and -
Figure 17 is a method for manufacturing a filter in accordance with an exemplary embodiment of the invention. - The Figures illustrate exemplary embodiments of a filter in accordance with embodiments of the invention and based on the foregoing, it is to be generally understood that the nomenclature used herein is simply for convenience and the terms used to describe the invention should be given the broadest meaning by one of ordinary skill in the art.
- Referring to
Figure 1-2 , a filter 10 is shown according to an exemplary embodiment of the invention. In an embodiment, the filter 10 generally comprises a cylindrical shape. It will be appreciated, however, that the filter 10 is not limited to include any particular shape or design and that the filter 10 may include any desirable shape or design. - The filter 10 is generally defined to include filter media, which is shown generally at 12. In an embodiment, as seen in
Figure 4 , thefilter media 12 includes asheet 14 of filter material that is rolled or wrapped to generally define a substantiallycylindrical body 16. The substantiallycylindrical body 16 generally defines anaxial passage 18. In an embodiment, thesheet 14 is rolled or wrapped about a central axis, A-A, that is shown extending through theaxial passage 18. - Referring to
Figure 2 , the substantiallycylindrical body 16 defines anupper portion 20 and alower portion 22. In an embodiment, the substantiallycylindrical body 16 is defined by a height, H, and a diameter, D. - It will be appreciated that the
sheet 14 offilter media 12 may be defined by any desirable number of layers, patterns, configurations or the like. For example, in an embodiment, as seen inFigures 5A-5C , thesheet 14 offilter media 12 may include one or more layers or the like defined by, for example,corrugations 24,embossments 26, a substantially flat,planar surface 28, or the like. In an embodiment, thesheet 14 offilter media 12 may also include one ormore end beads 30. - Referring to
Figure 2 , thefilter media 12 further defines a firstaxial end surface 32 proximate theupper portion 20 and a secondaxial end surface 34 proximate thelower portion 22. In an embodiment, the firstaxial end surface 32 is arranged opposite the secondaxial end surface 34. - In an embodiment, the
filter media 12 further defines an outercircumferential side surface 36 and an innercircumferential side surface 38. In an embodiment, the innercircumferential side surface 38 defines theaxial passage 18. - In an embodiment the filter 10 includes a
first core plug 40 disposed adjacent the firstaxial end surface 32 and extending axially into theaxial passage 18. In an embodiment, the filter 10 includes asecond core plug 42 disposed adjacent the secondaxial end surface 34 and extending axially into theaxial passage 18. In an embodiment, the first andsecond core plugs - In an embodiment, the filter 10 includes a
ring 44. In an embodiment, thering 44 includes aradial portion 46 and anaxial portion 48. In an embodiment, theradial portion 46 is disposed substantially adjacent the secondaxial end surface 34, and theaxial portion 48 is disposed substantially adjacent the outercircumferential side surface 36. In an embodiment, thering 44 may include any desirable material such as, for example, metallic or plastic. - In an embodiment, fluid may flow through the filter 10 according to the direction of the arrow, F. In reference to the direction of the arrow, F, the second
axial end surface 34 may generally define an upstream, "dirty side" of the filter 10 that receives unfiltered, "dirty" fluid whereas the firstaxial end surface 32 may generally define a downstream, "clean side" of the filter 10 that provides filtered, "clean" fluid. However, it will be appreciated that the filter 10 is not limited to the above-described fluid flow according to the direction of the arrow, F, and, if desired, the firstaxial end surface 32 may define the upstream, "dirty side" of the filter 10, and, the secondaxial end surface 34 may define the downstream, "clean side" of the filter 10. - In an embodiment, if, for example, the first
axial end surface 32 is the downstream, "clean side" of the filter 10, aseal 50 may be disposed at least proximate theupper portion 20 of the substantiallycylindrical body 16. When the filter 10 is disposed inside of a filter housing (not shown), theseal 50 is located substantially adjacent the filter housing and proximate a passage (not shown) formed in the filter housing. Functionally, theseal 50 prevents potentially unfiltered, "dirty fluid" from escaping the filter housing through the filter housing passage. Accordingly, theseal 50 prevents the mixing of "dirty fluid" with the "clean fluid" such that the filtered, "clean fluid" may leave the filter housing through the filter housing passage by way of the fluid moving through the filter 10 according to the direction of the arrow, F. - In an embodiment, the
seal 50 is disposed upon a steppedledge 52 of the substantiallycylindrical body 16. In an embodiment, the steppedledge 52 is formed proximate theupper portion 20 of the substantiallycylindrical body 16. - Although the
ledge 52 is described as a "stepped" ledge, it will be appreciated that theledge 52 is not limited to define a "step" or any particular shape or dimension. Functionally, theledge 52 provides a location on the substantiallycylindrical body 16 for receiving theseal 50. Accordingly, for example, theledge 52 may include any desirable size or shape that may permit reception of theseal 50 such as, for example, an arcuate shape, a concave shape, a convex shape, a frustoconical shape, a constant slope, an irregular slope, or the like. - In an embodiment, the stepped
ledge 52 generally defines the substantiallycylindrical body 16 to have a reduction of its height, H, and a reduction of its diameter, D, which is shown generally at HR and DR, respectively, inFigure 2 . In an embodiment, the steppedledge 52 further defines the substantiallycylindrical body 16 to include a thirdaxial end surface 54 and a second outercircumferential side surface 56. The thirdaxial end surface 54 and the second outercircumferential side surface 56 are both proximate theupper portion 20 of the substantiallycylindrical body 16. - As illustrated, the third
axial end surface 54 is arranged between the first and second axial end surfaces 32, 34. Further, the secondcircumferential side surface 56 extends between the first and third axial end surfaces 32, 54. - The stepped
ledge 52 may be formed or provided in any desirable fashion. For example, in an embodiment, as seen inFigure 6 , a sheet offilter material 14R may be pre-formed in any desirable configuration prior to being rolled or wrapped upon itself to define the substantiallycylindrical body 16. For example, thepre-formed sheet 14R may be defined to have a length, L, including a first length portion, L1, and a second length portion, L2. In an embodiment, the first length portion, L1, defines the height, H, and the second length portion, L2, defines the reduced height, HR. - In reference to
Figure 6 , the sheet offilter material 14R is wrapped upon itself from right to left to define the substantiallycylindrical body 16. Accordingly, when wrapped upon itself, the first length portion, L1, generally defines the reduced diameter, DR, having the height, H, and, the second length portion, L2, generally defines the diameter, D, having the reduced height, HR. - In an embodiment, the stepped
ledge 52 may be formed without providing apre-formed sheet 14R as described above. For example, as seen inFigure 7 , in an embodiment, thesheet 14 may include a length having similar height, H, and, upon rolling or wrapping thesheet 14 about the axis, A-A, upon itself to define the substantiallycylindrical body 16, the substantiallycylindrical body 16 defines the diameter, D. Then, as seen inFigure 8 , a precision cutting operation, for example, may be performed on the substantiallycylindrical body 16 in order to remove aportion 16R of the substantiallycylindrical body 16. As illustrated, the removedportion 16R generally defines a ring of the substantiallycylindrical body 16 that is removed proximate, for example, theupper portion 20 of the substantiallycylindrical body 16. Accordingly, upon eliminating thering 16R from the substantiallycylindrical body 16, the steppedledge 52 is formed to permit later depositing of theseal 50 upon theledge 52. In an embodiment, a knife, K, laser, Z, or the like may be utilized to remove thering 16R from the substantiallycylindrical body 16. - In another embodiment, as seen in
Figures 9A-9C , the precision cutting operation may be conducted in an operation that involves the simultaneous wrapping of thesheet 14 upon itself while a portion of thesheet 14 is removed. For example, as seen inFigure 9A , the formation of the substantiallycylindrical body 16 may be initiated by obtaining an end of thesheet 14 and wrapping thesheet 14 about the axis, A-A, upon itself. Then, as seen inFigures 9B and 9C , once it has been determined that thesheet 14 has been wrapped about the axis, A-A, to provide the substantiallycylindrical body 16 with the reduced diameter, DR (see, e.g.,Figure 9B ), the knife, K, or laser, Z, may be actuated to remove a portion of the height, H, of thesheet 14 as the wrapping of thesheet 14 about the axis, A-A, is continued. Once it has been determined that the diameter, D (see, e.g.,Figure 9C ), of the substantiallycylindrical body 16 has been achieved, the wrapping of thesheet 14 about the axis, A-A is ceased. - In order to accomplish the above-identified steps that includes the step of actuating, as seen in
Figure 9B , the knife, K, or laser, Z, during the wrapping of thesheet 14 about the axis, A-A, a sensor and/or processor may be included to provide the steppedledge 52 in an automated process. For example, a sensor may monitor the wrapping of thesheet 14 upon itself, and, upon wrapping thesheet 14 to define the reduced diameter, DR, the sensor may communicate with the processor such that the processor may actuate the knife, K, or laser, Z. Although a sensor and processor are described above, it will be appreciated that the process is not limited to include a sensor and/or processor and that any desirable type and number of components may be included to communicate in any desirable manner to provide the substantiallycylindrical body 16 with the steppedledge 52. - In an embodiment, as seen in
Figure 3 , the thirdaxial end surface 54 of the steppedledge 52 is generally defined by the outer three-to-five wraps of thesheet Figure 3 shows the thirdaxial end surface 54 being defined by three-to-five wraps of thesheet axial end surface 54 may be defined by any desirable number of wraps of thesheet - Once the stepped
ledge 52 has been formed, theseal 50 may be deposited on the steppedledge 52 in any desirable manner. In an embodiment, substantiallycylindrical body 16 may be disposed in a mold tool and theseal 50 may be molded over the steppedledge 52 in an injection molding operation. In an embodiment, as seen inFigure 3 , during the molding operation, the material defining theseal 50 may be permitted to flow between the three-to-five wraps of thesheet fingers 58 extending from theseal 50 that extend substantially axially into the substantiallycylindrical body 16 to create a mechanical bond of theseal 50 with the substantiallycylindrical body 16. - In an embodiment, upon molding the
seal 50 over the steppedledge 52, the seal becomes integral with and adheres to the substantiallycylindrical body 16. In an embodiment, the seal may not be integral with the substantially cylindrical body or adhered thereto. By molding theseal 50 in the manner described above, theseal 50 may be provided with the substantiallycylindrical body 16 without providing additional components / structure to clip, fasten or retain theseal 50 to the substantiallycylindrical body 16. In an embodiment, theseal 50 may include a polyurethane material. - In an embodiment, as seen in
Figures 10 and 11 , prior to molding theseal 50 upon the steppedledge 52, a retainingring 60 may be disposed adjacent the steppedledge 52 such that, upon molding theseal 50 over the steppedledge 52, the retainingring 60 becomes encapsulated between the substantiallycylindrical body 16 and theseal 50. Functionally, the retainingring 60 increases the rigidity to theupper portion 20 of the substantiallycylindrical body 16. - In an embodiment, the
rigidifying ring 60 includes anupper surface 62, alower surface 64, aninner surface 66 and anouter surface 68. In an embodiment, therigidifying ring 60 may include one ormore passages 70. In an embodiment, as seen inFigure 10 , the one ormore passages 70 extend through therigidifying ring 60, from theinner surface 66 to theouter surface 68. In an embodiment, as seen inFigure 11 , the one ormore passages 70 extend through therigidifying ring 60, from theupper surface 62 to thelower surface 64. In an embodiment, the one ormore passages 70 permits the material of theseal 50 to flow therethrough in order to increase the mechanical bond of therigidifying ring 60 and theseal 50. - In an embodiment, as seen in
Figures 10 and 11 , theinner surface 66 is disposed adjacent the second outercircumferential side surface 56 and thelower surface 64 is disposed adjacent the thirdaxial end surface 54. As seen inFigure 10 , theinner surface 66 includes a greater dimension than that of thelower surface 64; conversely, as seen inFigure 11 , thelower surface 64 includes a greater dimension than that of theinner surface 66. In an embodiment, therigidifying ring 60 may include any desirable material, such as, for example plastic or metallic. - Referring to
Figure 12 , in an embodiment, ashell 72 may be disposed adjacent the substantiallycylindrical body 16 prior to molding theseal 50 over the steppedledge 52. In an embodiment, theshell 72 includes anaxial portion 74 disposed substantially adjacent the outercircumferential side surface 36, a firstradial portion 75 extending radially inwardly toward the central axis, A-A, and disposed substantially adjacent the thirdaxial end surface 54, and a secondradial portion 76 extending radially inwardly toward the central axis, A-A, and disposed substantially adjacent the secondaxial end surface 34. As similarly described above, theseal 50 is disposed over the steppedledge 52, and, as a result, encapsulates the firstradial portion 75 between theseal 50 and the substantiallycylindrical body 16. In an embodiment, theshell 72 may include any desirable plastic material, such as, for example nylon. - Referring to
Figure 13 , in an embodiment, ashell 78 may be disposed adjacent the substantiallycylindrical body 16 prior to molding theseal 50 over the steppedledge 52. In an embodiment, theshell 78 includes a firstaxial portion 80 disposed substantially adjacent the outercircumferential side surface 36, aradial portion 82 extending radially outwardly away from the central axis, A-A, and a secondaxial portion 84 extending axially away from theradial portion 82. The firstaxial portion 80 of theshell 78 may be adhered, for example, proximate thelower portion 22 of the substantiallycylindrical body 16 with, for example, an adhesive. - Functionally, the
shell 78 is not encapsulated by theseal 50 as described in the embodiments discussed above. Theseal 50, as associated with theshell 78, however, is formed on the steppedledge 52 in a substantially cantilevered manner such that theseal 50 extends radially outwardly away from the central axis, A-A, and past the outercircumferential side surface 36 of the substantiallycylindrical body 16. Accordingly, theradial portion 82 and the secondaxial portion 84 function by substantially retaining and/or supporting aportion 86 of theseal 50 that extends radially outwardly and past the outercircumferential side surface 36. In an embodiment, theshell 78 may include any desirable plastic material, such as, for example nylon. - Referring to
Figure 3 , the shape and associated function of theseal 50 is described. Theseal 50 generally includes aradial base portion 88 disposed substantially adjacent the thirdaxial end surface 54. Theseal 50 generally includes a firstaxial portion 90 disposed substantially adjacent the second outercircumferential side surface 56. Theseal 50 generally includes a secondaxial portion 92. The first and secondaxial portions radial base portion 88. - The first and second
axial portions recess 94 that terminates at avalley 96 defined by theradial base portion 88. Referring toFigure 17 , in an embodiment, therecess 94 is created in amethod 200 by providing, S.201, thefilter media 12 into a mold tool cavity, which includes a protrusion extending from a surface of the mold cavity that corresponds to the shape/contour of therecess 94. Functionally, the protrusion extending from the surface of the mold cavity acts as a dam, S.203, during a molding procedure that results in material (e.g., polyurethane) provided/injected, S.202, into the mold tool cavity to be directed between the wraps of thesheet 14 in order to form theseal 50 with thefingers 58, S.204. - Further, after removing the filter 10 from the mold tool, the resulting
recess 94 formed by the protrusion of the mold tool may permit insertion and receipt of a substantially circumferential lip (not shown) of the filter housing within theseal 50. In an embodiment, the lip may define the passage formed in the filter housing that receives the filtered, "clean fluid." Further, in an embodiment, therecess 94 may be filled with any desirable material, such as, for example, a caulking material, to increase the strength of theseal 50. The first and secondaxial portions peaks 98 that are to be located adjacent the filter housing and proximate the filter housing passage. - Referring to
Figure 14-16 , afilter 100 is shown according to an exemplary embodiment of the invention. In an embodiment, thefilter 100 generally comprises an oval shape. It will be appreciated, however, that thefilter 100 is not limited to include any particular shape or design and that thefilter 100 may include any desirable shape or design. - The
filter 100 is generally defined to include filter media, which is shown generally at 102. In an embodiment, filtermedia 102 is substantially similar to thefilter media 12 as shown and described above inFigure 4 with the exception that thefilter media 102 includes asheet 104 that is wrapped to define a substantiallyoval body 106 rather than a substantially cylindrical body. In an embodiment, the substantiallyoval body 106 generally defines anaxial passage 108. In an embodiment, thesheet 104 may be wrapped upon itself to form a substantiallyoval body 106 that does not form thepassage 108. Further, in an embodiment, thepassage 108 may be sealed with any desirable material, such as, for example, a hot melt glue and a core plug may be omitted. In an embodiment, thepassage 108 may be sealed as described above and core plugs may additionally be included. In an embodiment, the substantiallyoval body 106 defines anupper portion 110 and alower portion 112. - In an embodiment the
filter 100 includes afirst core plug 114 disposed adjacent a firstaxial end surface 116 and extending axially into theaxial passage 108. In an embodiment, thefilter 100 includes asecond core plug 118 disposed adjacent a secondaxial end surface 120 and extending axially into theaxial passage 108. In an embodiment, the first and second core plugs 114, 118 may include any desirable plastic material, such as, for example, nylon. - In an embodiment, the substantially
oval body 106 includes a steppedledge 122 that is formed proximate theupper portion 110 in a manner similarly described above inFigures 6-9C . In an embodiment, aseal 124 is deposited upon the steppedledge 122 in a manner similarly described above, such as, for example, a molding operation. As similarly described above, the material of theseal 124 may flow between the three-to-five outer wraps of the substantiallyoval body 106 to definefingers 126. - In an embodiment, the
seal 124 is disposed upon the steppedledge 122 in a cantilevered manner as similarly shown and described inFigure 13 . In an embodiment, thefilter 100 includes ashell 128 as similarly described above inFigure 13 having a firstaxial portion 130, aradial portion 132 extending from theaxial portion 130 and a secondaxial portion 134 extending axially away from theradial portion 132. One or more of theradial portion 132 and the secondaxial portion 134 function by substantially retaining and/or supporting aportion 136 of theseal 124 that extends radially outwardly and past the outercircumferential side surface 138. - The present invention has been described with reference to certain exemplary embodiments thereof. However, it will be readily apparent to those skilled in the art that it is possible to embody the invention in specific forms other than those of the exemplary embodiments described above. The exemplary embodiments are merely illustrative and should not be considered restrictive in any way. The scope of the invention is defined by the appended claims and their equivalents, rather than by the preceding description.
Claims (9)
- A filter, comprising:a sheet (14) of filter media defining a body (16) havingan upper portion (20),a lower portion (22),a first end surface (32) proximate the upper portion (20),a second end surface (34) proximate the lower portion (22),a first side surface (36) extending between the first and second end surfaces (32,34),
wherein one or more of the upper and lower portions (20,22) definea ledge (52), wherein the ledge defineswherein the sheet (14) includes one or more layers defined by corrugations (24) and/or embossments (26) and a substantially flat, planar surface (28), anda third end surface (54) arranged between the first and second end surfaces (32,34), anda second side surface (56) extending between the first and third end surfaces (32,54);a seal (50) disposed upon the ledge (52),wherein the sheet (14) is wrapped about itself to define the body (16) having a plurality of sheet wrappings, wherein material defining the seal (50) extends between the plurality of sheet wrappings to define a plurality of fingers (126). - The filter according to claim 1, wherein the seal (50) includes
a base portion (88) disposed substantially adjacent the third end surface (54),
a first portion (90) extending from the base portion (88), wherein the first portion (90) is disposed substantially adjacent the second side surface (56), and
a second portion (92) extending from the base portion (88), wherein the first and second portions (90,92) define a recess (94) that terminates at a valley (96) defined by the base portion (88), wherein the first and second portions (90,92) define peaks (98). - The filter according to claim 2, wherein the first, second and third end surfaces (32,24,54) are axial end surfaces, wherein the first and second side surfaces (36,56) are circumferential side surfaces.
- The filter according to claim 3, wherein the body (16) is a substantially cylindrical body.
- The filter according to claim 3, wherein the body (16) is a substantially oval body.
- The filter according to claim 1 further comprising
a retaining ring (60) disposed adjacent the ledge (52), wherein the retaining ring (60) is encapsulated between the seal (50) and the body (16). - The filter according to claim 1 further comprising
a plastic shell (72) disposed adjacent the body (16). - The filter according to claim 7, wherein a portion of the plastic shell (72) is disposed adjacent the ledge (52), wherein the portion of the shell (72) is encapsulated between the seal (50) and the body (16).
- The filter according to claim 7, wherein a portion of the seal (50) is cantilevered relative the body (16), wherein a portion of the plastic shell (72) supports the portion of the seal (50) that is cantilevered relative the body (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/192,651 US10293296B2 (en) | 2008-08-15 | 2008-08-15 | Filter |
PCT/US2009/053749 WO2010019797A1 (en) | 2008-08-15 | 2009-08-13 | Filter |
Publications (2)
Publication Number | Publication Date |
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EP2318114A1 EP2318114A1 (en) | 2011-05-11 |
EP2318114B1 true EP2318114B1 (en) | 2013-03-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP09791497A Not-in-force EP2318114B1 (en) | 2008-08-15 | 2009-08-13 | Filter |
Country Status (7)
Country | Link |
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US (3) | US10293296B2 (en) |
EP (1) | EP2318114B1 (en) |
CN (1) | CN102186555A (en) |
BR (1) | BRPI0912810A2 (en) |
CA (2) | CA2820610C (en) |
MX (1) | MX2011001744A (en) |
WO (1) | WO2010019797A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105555389A (en) * | 2013-06-28 | 2016-05-04 | 唐纳森公司 | Filter cartridge for an air cleaner assembly |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10293296B2 (en) * | 2008-08-15 | 2019-05-21 | MANN+HUMMEL Filtration Technology Group Inc. | Filter |
US10195320B2 (en) * | 2012-04-12 | 2019-02-05 | Sisu Global Health, Inc. | Blood filtering component, apparatus, and method |
EP3157654B1 (en) * | 2014-06-18 | 2020-04-22 | Mann+Hummel GmbH | Filter and filter cartridge |
EP3311902B1 (en) * | 2016-10-24 | 2020-06-24 | Donaldson Company, Inc. | Air filter element and method for producing same |
US11185644B2 (en) * | 2017-06-30 | 2021-11-30 | Conmed Corporation | Filter cartridge assemblies |
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GB1121896A (en) * | 1966-07-21 | 1968-07-31 | Gen Motors Ltd | Air filters |
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AT331813B (en) | 1971-11-09 | 1976-08-25 | Marquet & Cie Noel | FILTER AND METHOD FOR ITS MANUFACTURING |
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DE3837423A1 (en) * | 1988-11-04 | 1990-05-10 | Bosch Gmbh Robert | LIQUID FILTER |
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DE19819980B4 (en) * | 1998-05-05 | 2004-02-05 | Hüttlin, Herbert | Filter device for a process apparatus |
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US6190432B1 (en) * | 1999-02-26 | 2001-02-20 | Donaldson Company, Inc. | Filter arrangement; sealing system; and methods |
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-
2008
- 2008-08-15 US US12/192,651 patent/US10293296B2/en active Active
-
2009
- 2009-08-13 CN CN2009801405341A patent/CN102186555A/en active Pending
- 2009-08-13 EP EP09791497A patent/EP2318114B1/en not_active Not-in-force
- 2009-08-13 BR BRPI0912810A patent/BRPI0912810A2/en not_active Application Discontinuation
- 2009-08-13 MX MX2011001744A patent/MX2011001744A/en active IP Right Grant
- 2009-08-13 CA CA2820610A patent/CA2820610C/en active Active
- 2009-08-13 CA CA2734255A patent/CA2734255C/en active Active
- 2009-08-13 WO PCT/US2009/053749 patent/WO2010019797A1/en active Application Filing
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2019
- 2019-05-20 US US16/416,988 patent/US11517845B2/en active Active
-
2022
- 2022-12-05 US US18/061,961 patent/US11964227B2/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105555389A (en) * | 2013-06-28 | 2016-05-04 | 唐纳森公司 | Filter cartridge for an air cleaner assembly |
CN105555389B (en) * | 2013-06-28 | 2017-10-31 | 唐纳森公司 | Filter element for air cleaner assembly |
Also Published As
Publication number | Publication date |
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US20100038305A1 (en) | 2010-02-18 |
US11964227B2 (en) | 2024-04-23 |
CA2820610C (en) | 2020-03-24 |
US10293296B2 (en) | 2019-05-21 |
US20230112814A1 (en) | 2023-04-13 |
BRPI0912810A2 (en) | 2016-05-17 |
US11517845B2 (en) | 2022-12-06 |
MX2011001744A (en) | 2012-06-19 |
CA2820610A1 (en) | 2010-02-18 |
CA2734255A1 (en) | 2010-02-18 |
CA2734255C (en) | 2013-10-15 |
CN102186555A (en) | 2011-09-14 |
EP2318114A1 (en) | 2011-05-11 |
US20190308127A1 (en) | 2019-10-10 |
WO2010019797A1 (en) | 2010-02-18 |
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